Beam and Diagonal Tension

A beam is a structural element that is used to support load and transfer it to the supports. Diagonal tension is a type of stress that occurs in a beam when it is subjected to a load that causes it to bend. This stress is caused by the deformation of the beam, which causes the fibers on one side of the beam to stretch and the fibers on the other side to compress.

Angle of Diagonal Tension

The angle of diagonal tension is the angle at which the tension force acts on the beam. This angle is important because it affects the strength and stability of the beam. The correct answer to the given question is option 'B' which is 45°.

Explanation

When a beam is subjected to a load, it will deflect or bend in the direction of the load. As the beam deflects, it will experience diagonal tension on one side and diagonal compression on the other side. The angle at which the diagonal tension acts depends on the orientation of the load and the geometry of the beam.

In the case of a simply supported beam, where the load is applied at the center of the beam, the angle of diagonal tension is 45° with the horizontal. This means that the tension force is acting at an angle of 45° to the direction of the load.

The reason for this angle is that the load is applied vertically to the beam, causing it to deflect downwards. As the beam deflects downwards, the fibers on the top of the beam are stretched, causing diagonal tension. The angle of this tension is 45° because it is midway between the horizontal and vertical directions.

Conclusion

In summary, the angle of diagonal tension in a beam is the angle at which the tension force acts on the beam. The correct answer to the given question is option 'B', which is 45°. This angle is important because it affects the strength and stability of the beam.